The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة 5
... substance this is that a vast nebula once occupied the entire area of our solar universe . In the process of con- densation the various planets and their satellites broke away and gradually cooled while the central sun still retains a ...
... substance this is that a vast nebula once occupied the entire area of our solar universe . In the process of con- densation the various planets and their satellites broke away and gradually cooled while the central sun still retains a ...
الصفحة 6
... substances raises other doubts . Barrell claims that " if they extend in their surface amount to a depth of 40 miles , they must supply heat to the surface as fast as it is lost by radiation into space . The earth there- fore appears ...
... substances raises other doubts . Barrell claims that " if they extend in their surface amount to a depth of 40 miles , they must supply heat to the surface as fast as it is lost by radiation into space . The earth there- fore appears ...
الصفحة 7
... substance called coronium known only by lines in the solar spectrum and which has not been found on earth . Under the peculiar conditions existing then , in bygone ages , the various sub- stances found on earth as well as in the stars ...
... substance called coronium known only by lines in the solar spectrum and which has not been found on earth . Under the peculiar conditions existing then , in bygone ages , the various sub- stances found on earth as well as in the stars ...
الصفحة 8
... substances , leaving two as semimetallic and the balance to be determined . A few of these elements are very common , the majority are very rare . Some are known by name , at least , to every one but it is doubtful if one person in a ...
... substances , leaving two as semimetallic and the balance to be determined . A few of these elements are very common , the majority are very rare . Some are known by name , at least , to every one but it is doubtful if one person in a ...
الصفحة 10
... substances were discovered and studied . In 1774 , Priestley and Scheele both found oxygen and the hoary idea that fire was a separate entity , phlogiston , was soon destroyed . Before 1800 , Cavendish had discovered hydrogen and found ...
... substances were discovered and studied . In 1774 , Priestley and Scheele both found oxygen and the hoary idea that fire was a separate entity , phlogiston , was soon destroyed . Before 1800 , Cavendish had discovered hydrogen and found ...
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acres Africa America appears areas Asia atoms average bacteria believe birds body carbon carbon dioxide cause cent century cephalic index changes characters chromosomes civilization climate color common copper crops cultivated culture danger Darwin death rate destroy disease domestic early earth eggs environment Europe European evidence fact feeble-minded females fish forms germ cells given heredity human Ibid important increase Indians individual inheritance insane insects iron killed known land later light living male man's marriage metals miles natural selection nature Negro neolithic organisms ovum oxygen Pará rubber tree parasites physical population possible pounds present problems produced R. S. LULL race seeds seems social South South America species square mile supply T. H. MORGAN temperature things thousand tion to-day trees tropics types United wild woman women